The Basketball Shrink finds teams most similar to the team you selected, based on the stats on the page you are looking at. On the summary page, teams are compared by adjusted tempo, adjusted offensive efficiency, and adjusted defensive efficiency. On the other stats pages teams are compared by all the stats listed on the page. The algorithm takes the sum of the percentage difference of each stat and ranks the teams accordingly.
I call this the Basketball Shrink because it’s designed to give the user an idea of the personality of a team by producing a list of teams that play a similar style. For more information, here is my original post on the Shrink from the 2005 season: Basketball Shrink Debuts.